Brian, thanks for the list of fibrous flourescent minerals.
I have to admit I was quite disappointed when I did the sample wheel image and realized what the OM team was looking for. I forgive the sample wheel designers for their lapse. It illustrates the Herculean task of eliminating contamination in any space mission.
mann, you need a few degrees of eye separation and some subject depth to "see" 3D, and the 1 mm of movement of the sample wheel coupled with the multi-cm distance to the OM and the 10s of micron subject depth of the OM targets provides virtually no 3D.
But, here is the world's first ( and last? ) 3D OM:

with a link to the full offset 3D.
What I find interesting about this image is the constancy of the color of the pixels, given the changes in lighting and viewing geometry - plus the dreaded JPGification of the images.